Conical drinking cup



June 9, 1931. 1.. w. LUELL EN 1,809,281

CONICAL DRINKING CUP v Filed Jan. 31. 2 Sheets-Sheet 1 INVENTO ATTokNEY June 9, 193i. w, N 809,281

CONICAL DRINKING CUP Filed Jan. 31. 1927 2 Sheets-Shea! 2 INVENTOR ATTORNEY ing purposes.

Patented June 9, 1931 LA'W'RENGE W. LUELLEN, OF MOUNTAIN LAKES, INTENT JERSEY CONIGAL DRINKING cur Application filed January 81, 1927. Serial No. 164,705.

This invention relates to conical drinking cups. p

The object of this invention is to provide 15 ity within the cup when formed.

Another object 'of the invention is to provide a cup of'such configuration as will give a maximum capacity within the cup from a minimum area of paper and at the same 20 time so form the side walls of the cup with a plurality of encircling the cup so that the contents thereof will not readily spill or run out over the brim when the cup is being used for drink- Another object double sealing of the-bottom and reinforcing of the side wall by the encircling seam thereof.

Another object of the cup is to provide a spacing means for conical cups made of a single piece of paper, which is the same thickness throughout the circumference of the cup.

Another object of the invention is to providea reinforced rim for the top of a'conical cup by means of the entirely encircling seam.

It is a further object of this invention to provide a cup of simple and eflicient construction, which may be cut from a er stock with a minimum waste of matena It is a further ob'ect to provide a cup of the character descri ed which can be manu- 4 factured economicall by machinery.

' Other objects of t e invention will be in art obvious and will in part appear-herematter.

For a fuller understanding of the nature nin) VB0 and objects of the invention, reference .formed by a circular edge 1 having its center thicknesses of paper entirely.

of the cup is to provide a point 6 fora distance equal to the line 8,

should be had to the following detailed de-- scription taken in connection with the accompanying drawings, in which:

Fig. l is a plan of a blank made in accordance with this invention.

Fig. 2 is a view showing the manner in which these blanks may be cut from the stock with substantially no waste.

Fig. 3 is a view of the completed cup.

Figs. 4, 5,and 6 are views of the cup in partly assembled state, and

Fig. 7 is a top plan view.

In the particular form of the blank illustrated, the'general contour of the blank is of curvature at the apex 2 of the cup. This edge isadapted to serve as the periphery of the completed cup. The blank has two other edges which, for convenience, may be termed radial ed es. One radial edge 3 extends inwardly rom one termination 4 of the peripheral edge 1 to a point 5 near the apex 2. This edge 3 is curved with the same radius of curvature as the edge 1, but with its center 2 displaced a distance equal to the height of the finished cup. The edge 1 has its other or lower end 6 substantially coincident with the apex C of the blank. Also, the line, joining the centers of curvature 2 and 2 when extended will pass substantially through the apex C. This line therefore pa'sses substantially through all the apexesv when the blanks are relatively arranged as in Fi ure 2 and for convenience is designated CC. 1" 35 The hlank generally projects beyond the line CC to the right, as seen in Fig. 1, to form an overlapping portion 7. vThis is bounded by a line 8 extending upwardly from the point 5 to form a re-entrant angle with the curved line 3, and by a line 9 having a radius of curvature the same as that of the line 8 and extending upwardly from the say to a point 10. In practice, it is convenient to make the line 9 a curved line continuous beyond the point 10 as shown at 11 to the pointiwhere it intersects the line 8.

This line 9- 1011 may be made a curve There with the same radius of curvature as the side 1.

By reason of the fact that the lines 1 and 3 have the same radius of curvature, and further b reason of the fact that the lines 8 and 9 ave the same radius of curvature, it

will be clear that the edge of the blank inbe out from a continuous strip of paper with substantially no waste.

It will thus be seen from the foregoing, and referring particularly to Fig. 1, that the improved blank is enerall heart sha ed.

Furthermore, since t e blan is bounde by the four lines 1, 3, 8 and 91011 it forms, when in fiat condition, a quadrangular figure.

The formation of the cup from the blank is illustrated in Figs. 3, 4, 5, 6 and 7 The apex of the cup is preferably at the point 2 close to the point 5 but inside the body of the blank. The blank may be wound around a slight overlap of .the point v6 beyond the point 4. When so wound, the projection 7 causes an increasing overlap from the periphery toward the point and permits the projection formed at the line 8 to wrap securely around the apex to reinforce the on When the curve of the line 9--11 has su stantially the same radius as the line 1 it causes the overlap to wind about the cup as it extends toward the apex and thus strengthens the cup against distortion. lar spiral so formed on the outside of the ormed cu is also of ornamental appearance, as will e seen from Figs. 3 and 7.

The center'of the mandrel is placed at 2 and the point 4 folded around it as shown in Fi 4. The point 6 is then carried aroun in the opposite direction to overlap the oint 4, causmg the blank, at the apex to be olded upon itself tightly to close the apex, as clearly shown at 13. By thus placing the apex within the body of the cup, all

- danger of leakage at that point is elimi- .nated. The point 12 is thereupon folded around the apex, covering up the apex uncture 13 and insuring the tightness o the closure and at the same time reinforcing the Theparts may be fixed in ex of the clap;

, but Iprefer to cement them a p ace by para together by a water-proof cement such as so ium silicate. The overlaps or projections 7, as they thus encircle the apexes of the cups, serve moreover, to space the cups when nested'together, thus facilitating their se aration from each other and-avoiding bin aeoaaea ing. Moreover this overlap strengthens the cup rim byi d cup perip e I Wlth'the a ove construction it will be obvious that the advantages of a conical paper cu are obtained which is completel watertig t at the apex, which has arigi ity and strength to withstand hard usage while at 1 the same time it is constructed from a blank which can be out from stock with a minimum waste.

It will be obvious that under certain circumstances, where it may be desired, this series of blanks such as shown in Fig. 2 may be placed side by side with the projections of one series lying in the recesses between the other series, thus utilizing substantially all of the stock. In other words, two adjacent sides of the quadrangular blank form a counterpart of two other adjacent sides.

Thus by the above construction are accomplished the objects hereinbefore set fort Since certain changes may be made in carryin out the above method without departing rom the scope of the invention, it is .intended that all matter contained in the istributed support about the above description shall be interpreted as il-' lustrative and not in a limiting sense. comcal mandrel of such s1ze as to cause a It is also to be understood that the following claimsare intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

4 Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A quadrangular blankfor the manufacture of a conical cup, having two opposite sides of complementary form, one said side having an outwardly convex portion for formin the edge of the conical cup.

2. A lank for the manufacture of a conical drinking cu of general heart shape, having on one si e a reentrant angle and on the opposite side a pro'ecting angle, the

a curved edge adapted to serve as the penphery of the cup and terminating at one end in a rojectin angle, the other edge of said ang e exten 'ng toward and beyond the'apex of the cup to form an overlapping edge extending beyond the apex, the remainder of said blank being defined by a reentrant angle having its. apex near to but outside of the apex of the cup, the side of the blank having said reentrant angle being complementary to the side having said projecting angle. 7

A blank fora conlcal drinking cup, including a curved edge with its center of 10 curvature at the a ex of the cup and two radial edges exten in inwardly from the ends of said curved e ge toward the apex, one of said radial edges terminating adja cent to, but not at the apex, and the other of said radial edges extending beyond the apex and spaced therefrom and having its end connected to the end of the first named radial edge to form a reentrant angle whereby there is provided a projecting tab for reinforcing the apex, said second mentioned radial ed e forming at its juncture with said curved e ge, a projecting angle forming a blankedge having a configuration complementary toth'e configuration of the blank edge having said reentrant angle.

6. A blank for a conical drinking cup defined in part by two intersecting circular arcs of equal radii, radially equal to the height of the cup, and centers spaced 3g apart the height of a. cup, said arcs being continued from their intersection to the line joining their centers, the remainder of said blank being projectedv beyond said line .to form an overlap defined 1n part b bounding lines making an angle to sai line of centers, and by a line connecting the termination of said bounding lines.

7. A blank for conical drinkin cups comprising a body portion defined by two circular arcs of e ual radii, said arcs terminating in a straig t line joining their centers, and an overlap portion having its exterior sides defined by two equal lines and a connection between them. i V 5 8. A blank for drinkingcups comprising a body portion and an overlap portion, sai

overlap portion projecting beyond the apex to form a tab defined, in part, by a concave curve originating at a point adjacent the apex I w and extending outwardly therefrom to intersect an adjacent bounding edge of the tab.

9. A blank -for conical drinking cups of quadrangular form having all fourredges of the same curvature, two of said edges forming therebetween a reentrant an le which is complementary with a remote e ge of the blank. p In testimony whereof I aifix nIijyiasi ature.

. r LAWRENCE L L EN. 

